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Cessna CE-310 / L-27 / U-3

 

cessna310
CE-310


In 1952, Cessna initiated the design of a new five/six-seat twin-engined light monoplane designated Cessna Model 310. The prototype flew for the first time on 3 January 1953, proving in production form to be a popular twin. Of low-wing configuration and with tricycle landing gear, the prototype was powered by the 168kW Continental O-470, an engine developed originally for military use under the designation E225. Its use to power the Cessna Model 310 was one of its first civil applications, early production aircraft having the more powerful 194kW IO-470. An identification feature of the design at that time were the two wingtip fuel tanks, then representing the entire fuel tankage.


Production deliveries began in 1954, with steady product improvement continuing year by year. The swept tail came in 1960, the extra rear window in 1961, and now the slanted, sharpened tip tanks giving the 310G a totally updated appearance. The cabin was capable of seating five. It has a loaded weight of 4,830 lb., and cruises at 220 miles over a range of 825 miles.


A deluxe version with turbocharged engines, air-conditioning and an oxygen system as standard was introduced in 1966. This was then named the Turbo-System Executive Skyknight being known also for a short period as the Model 320, but later marketed as the Turbo T310.


Final versions were the basic Model 310 with 213kW Continental IO-520-MB engines, the structurally identical Model 310II which incorporated a factory installed avionics/equipment package, the Turbo T310 with TSIO-520-BB powerplants and the Turbo T310 II with the same additional equipment fit as the Model 310 II.


In the mid-1950s, following competitive selection, a slightly modified version of the Model 310 was ordered for light cargo-liaison duties with the US Air Force under the designation L-27A, subsequently redesignated U-3A A total of 160 were built followed by 36 U-3Bs equipped for all-weather operation, and all were nicknamed 'Blue Canoes'.

 

Cessna-L27

Cessna L-27 (U-3A) Blue Canoe

 

The 1972 Cessna 310 had an Omni-Vision rear window installed in a slightly enlarged rear fuselage to provide more room for back seat passengers, together with a bigger front windshield, new easier-to read instruments, cleaner panels and detail refinements common to the entire line.


On some 310s, with extra wing-locker tanks, the aircraft can carry 203 USG.


The Cessna 310 had well over 3,000 marketed by 1972.


The B55 Barons and the Cessna 310s are powered by 260-hp Continental IO-470-series engines, which have 1,500-hour TBOs, provided their exhaust valves are either nickel-coated or nimonic; otherwise a 1,200-hour TBO applies.


With a wingspan of 36 ft 11 in (11.24 m), and two 260 hp engines, the Model 310 can fly safely on only one engine, and has a maximum range of about 1,700 miles (2,735 km).


The final development of the 1953 design came in 1975 when a longer nose was fitted as well as an overhead window for the rear seat passengers.


When production finished in May 1981, 5,241 commercial examples of the Model 310 had been built, including a small number for the French air force, plus the 196 delivered to the USAF.

 

CE-310-Cole
1960 Cessna 310E with Colemill conversion

 

Gallery

 

Variations:
Riley Rocket
Riley Turbostream / Super 310/320


1977 CE-310
Engines: 2 x Continental IO-520-M, 285 hp.
Seats: 4/6.
Wing loading: 30.73 lb/sq.ft.
Pwr loading: 9.65 lb/hp.
Gross wt: 5500 lb.
Empty wt: 3337 lb.
Equipped useful load: 2049 lb.
Payload max fuel: 831 lb.
Range max fuel/75% pwr: 1129 nm/5.8 hr.
Range max fuel / 55% pwr: 1382 nm/ 7.9 hr.
Service ceiling: 19,750 ft.
75% cruise: 194 kt.
55% cruise: 176 kt.
Vmc: 81 kt.
Stall: 72-79 kt. 1.3
Vso: 94 kt.
ROC: 1662 fpm.
SE ROC: 370 fpm @ 106 kt.
SE Service ceiling: 7400 ft.
Min field length: 1790 ft.
Fuel cap: 600/1218 lb.
Undercarriage: retractable.

1979 Cessna 310
Engines: 2 x Continental IO-520-MB, 285 hp, 213kW.
Wingspan: 11.25 m / 36 ft 11 in
Length: 9.74 m / 31 ft 11 in
Height: 3.25 m / 10 ft 8 in
Wing area: 16.63 sq.m / 179.00 sq ft
Max speed: 207 kts. / 383 km/h / 238 mph
Max cruise speed: 195 kts.
Max range: 1,511 nm.
Max usable fuel: 203 USG.
ROC: 1,662 fpm.
ROC SE: 370 fpm.
Service ceiling: 6020 m / 19,750 ft.
Service ceiling SE: 7,400 ft.
Takeoff dist 50 ft obstacle: 1,700 ft.
Landing dist 50 ft obstacle: 1,790 ft.
Take-off weight: 2495 kg / 5501 lb
Empty weight: 1523 kg / 3358 lb
Max ramp wt: 5,535 lbs.
Max zero fuel wt: 4,900 lbs.
Max useful load: 2,182 lbs.
Seats: 6.

1979 Turbo Cessna 310
Engines: 2 x Continental TS10-520-BB, 285 hp.
Max speed: 237 kts.
Max cruise speed: 223 kts.
Max range: 1,440 nm.
Max usable fuel: 203 USG.
ROC: 1,700 fpm.
ROC SE: 390 fpm.
Service ceiling: 27,400 ft.
Service ceiling SE: 17,200 ft.
Takeoff dist 50 ft obstacle: 1,662 ft.
Landing Dist 50 ft obstacle: 1,790 ft.
Max ramp wt: 5,535 lbs.
Max zero fuel wt: 5,015 lbs.
Max useful load: 2,062 lbs.
Seats: 6.

Turbo 310
Engines: 2 x Continental TSIO-520-B, 285 hp.
Seats: 4/6.
Wing loading: 30.73 lb/sq.ft.
Pwr loading: 9.65 lb/hp.
Gross wt: 5500 lb.
Empty wt: 3453 lb.
Equipped useful load: 1933 lb.
Payload max fuel: 715 lb.
Range max fuel/75% pwr: 1293 nm/5.7 hr.
Range max fuel / 55% pwr: 1316 nm/ 7.4 hr.
Service ceiling: 27,400 ft.
75% cruise: 223 kt.
55% cruise: 179 kt.
Vmc: 81 kt.
Stall: 72-79 kt. 1.3
Vso: 94 kt.
ROC: 1700 fpm.
SE ROC: 390 fpm @ 106 kt.
SE Service ceiling: 17,200 ft.
Min field length: 1790 ft.
Take-off dist, 50ft: 1670 ft.
Ldg dist 50 ft: 1795 ft.
Fuel cap: 600/1218 lb.
Undercarriage: retractable.

CE-310Q

Cruise: 180 kt.
Useful load: 1780 lb.
Seats: 6.

1979 Cessna Turbo 310-R
Engine: 2 x Continental TSIO-520-MB, 285 hp@2700 rpm
TBO hrs.: 1400
Fuel Type:100/100LL
Propeller: McCauley three-blade, full feathering/78 in
Landing Gear type: Tri./Retr.
Max ramp weight (lbs.): 5535
Gross weight (lbs.): 5500
Landing weight (lbs.): 5400
Zero-fuel weight (lbs.): 5015
Empty weight, std. (lbs.): 3723
Useful load, std. (lbs.): 1777
Payload, full std. fuel (lbs.): 1165
Usable fuel (USgals.): 100
Optional fuel (USgals.):143 / 166 / 207
Oil capacity (qts.): 13 per engine
Wingspan: 36 ft. 11 in.  
Overall length: 31 ft. 11.5 in.
Height: 10 ft. 8 in.
Wing area (sq. ft.):179
Wing loading (lbs./sq. ft.): 30.73
Power loading (lbs./hp.): 9.65
Wheel track (in.): 6.50 x 10
Wheel size (in.): 6.50 x 6
Seating capacity: 6
Cabin doors: 1
Cabin width (in.): 48.5
Cabin height (in.): 50
Baggage capacity (lbs.): 950
Cruise speed (kts.) 75% power @ 20,000/10,000 ft.: 223/201
Cruise speed (kts.) 65% power @ 20,000/10,000 ft.: 204/185
Cruise speed (kts.) 55% power @ 20,000/10,000 ft.: 195/177
Max range @ 20,000 ft. (w/ reserve) (nm) 75% power 100/203 gals. usable: 519/1242
Max range @ 20,000 ft. (w/ reserve) (nm) 65% power 100/203 gals. usable: 545/1290
Max range @ 20,000 ft. (w/ reserve) (nm) 55% power 100/203 gals. usable: 570/1360
Max range @ 10,000 ft. (w/ reserve) (nm): 75% power 100/203 gals. usable: 491/1140
Max range @ 10,000 ft. (w/ reserve) (nm): 65% power 100/203 gals. usable: 515/1200
Max range @ 10,000 ft. (w/ reserve) (nm): 55% power 100/203 gals. usable: 540/1270
Stall speed (gear, flaps up) (knots): 78
Stall speed (gear, flaps down) (knots): 70
Best rate of climb (2 engines) (fpm): 1700
Single-engine rate of climb, SL (fpm): 390
Service ceiling (ft.): 27,400
Service-engine sevice ceiling (ft.): 17,200
Takeoff ground roll (ft.): 1306
Takeoff over 50-ft. obstacle (ft.): 1662
Landing ground roll (ft.): 640
Landing over 50-ft. obstacle (ft.): 1790  

 

U-3A / L-27A
Engines: 2 x Continental O-470-M, 240hp
Props: Hartzell HC-C2YF-2CUF, C-2285
Fuel cap:133 USG
Cruise: 205 mph at 21-22GPH
Seats: 5


Colemill Executive 600 / Cessna 310
Engines: 2 x Continental IO-520-E, 300 hp.
Seats: 6.
Wing loading: 29.1 lb/sq.ft.
Pwr loading: 8.7 lb/hp.
Max TO wt: 5200 lb.
Empty wt: 3125 lb.
Equipped useful load: 1952 lb.
Payload max fuel: 1112 lb.
Range max fuel/ 75% cruise: 990 nm/4.3 hr.
Service ceiling: 19,500 ft.
75%  cruise: 198 kt.
Vmc: 64 kt.
Stall: 64 kt. 1.3
Vso: 83 kt.
ROC: 2500 fpm.
SE ROC: 400 fpm @ 101 kt.
SE ceiling: 11,500 ft.
Min field length: 1795 ft.
Fuel cap: 840 lb.

 


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